Window-fastener.



W. KUHEFUSS.

WINDOW FASTENER.

APPLlcAnoN man JUNE lo, 191s.

vff'c WILLIAM KUHEFUss, or BROOKLYN, NEW YORK. A

WIND OW-FASTENER.

nagaan.

i Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed .Tune 10, 1918. Serial 110.239,155.

To all whom t may concern: Y

Be it known that 1, Wnmrair Knnnrnss, a citizen of the United States,residing at Brooklyn, in the county of Kings, State of New York, haveVinvented certain new and useful Improvements in Window-Fasteners; and Ido hereby declare the following to be a fulhclear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention is an improvement in locks and has particular referenceto a window fastener. Y

An object of the invention is to provide an improved window fastenerdesigned to lock either the upper or lower or both sashes of a window inpartially opened position and prevent further opening thereof byunauthorized persons.

Another object is to provide a lock of this character which is simple inconstruction, easy to manufacture, readily applicable to a windqw andeffective in carrying out the purpose for which it is designed.

The inventive idea involved is capable of receiving a variety ofmechanical expressions one of which, for'the purpose of illustrating theinvention, is shown in the accompanying drawing wherein:

Figure 1 is a front elevation of showing the invention applied thereto.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is a section on the line 4 4 of Fig. 1.

Fig. 5 is a detailed perspective view of the adjustable locking member.

The window to which the fastener is applied may be of any desiredconstruction and in the accompanying drawing the same is shown asconsisting of a windowV frame 10 in which are slidably mounted the upperand lower sashes 11 and 12,V respectively, the same being shown lockedin partially opened positions.

Preferably mounted upon the upper rail of the lower sash 12 andVadjacent one verf tical edge thereof is a lock casing 13 of rectangularformation secured to the railby' means Yof suitable fasteners 14 andhaving extending Vcentrally therethrough an opening 15 provided with acommunicating groove 16 awindow which extends the length of saidopening. In the top of the casing 13 the same is provided with recesses17 disposed transversely with respect to the opening 15 and intersectingthe same.

The upper sash 11 has secured to the side rail thereof adjacent the lockcasing 13 a locking strip 18 a portion of which is embedded in the siderail and secured thereto by means of suitable fasteners such as screws19 and the other portion of said strip extends inwardly and is providedwith a row Yof vertically alined openings 20.

The y locking member 21 is adjustably mounted in the lock casing 13 andpreferably includes a bolt 22 slidably mounted in the opening 15 in saidcasing and provided upon its free end with a squared portion 23 adaptedto engage in any one of the openings 20 when the locking member is inits operative position. The bolt 22 carries a. pair of locking lugs 24intermediate the ends thereof which are engageable in the groove 16 andwhich have associated therewith a pair of Vtumblers 25 mounted forrotation within the recesses 17 of the lock casing and having openings26 through which the bolt 22 extends and said openings 26 are formedwith notches 27 which are adapted to be alined with the lugs 24 byrotating the tumblers-in order that the locking bolt may be adjustedfrom its locking to the inoperative or releasing position thereof. Bythis construction there is provided a permutation lock which willeffectively prevent the withdrawal of the locking bolt by persons notfamiliar with the combination and by reason thereof it will be obviousthat the sashes 11 and 12 will be locked together when in partiallyopened positions.

In order that the sashes 11 and 12 may be locked to the window frame andprevented from movement relative thereto there is preferably provided asecond locking strip 28 secured to the vertical stile of the Vwindowframe longitudinally thereof and said strip is provided in one of'itsvertical edges with a plurality of Vslots or notches 29 which areadapted to receive the locking arms 30 of the member 21 when the latteris in its locking position so that any vertical movement ofthe windowsashes with respect to the framefwill be revented. The locking arms 80are'prefera ly arranged'in spaced parallel relation with respect to eachother the locking strip 28 so that the locking ofthe sashes with respectto each other and to the window frame will be simultaneouslyV effected.

What is claimed is: Y Y l. The combination Vwith a window vframe andupper and lower sashes slidable therein, of a locking strip secured toone of the vertical stiles of the frame and having a plurality ofnotches therein, a second lock-V ing strip secured to one of the sashesand having a plurality of openings therein, a lock casing carried by theother sash, a bolt slidable with respect to the casing and engageableinany one of the openings in the second strip, arms connected with thebolt and engageable in the notches of the iirst named locking Strip whenthe bolt is engaged in an opening in the second locking strip, lugscarried by the bolt and tumblers revolubly engaged with the bolt andhaving notches, said tumblers being movable lto bring their notches intoand out of position for the passage of the lugs of the bolttherethrough.

2. The combination with 'a window frame and upper and lower sashesslidable therein, of a locking strip carried by one Aofthe verticalStiles of the frame, and provided with a vertical series of notches, asecond locking strip carried by one of the sashes and provided with avertical series-of openings, a

lock casing carried by the other sash, a locking member slidably mountedin the casing, said locking member including a bolt engageable in anyone ofthe openings of the second strip, and including also armsengageable in the notches ofthe first strip when the bolt is engaged inan opening in the second strip, lugs carried by the bolt and tiunblersmounted in the casing and movable into and out of position tointerrupt'movement of the lugs and therewith the locking member, to locksaid member in'either of its positions. Y

3. The combination with a window frame and upperand lower sashesslidable therein,

of a locking strip secured to one of the vertical stiles of said windowframe and having a plurality of notches therein, a second locking stripsecured to one of said sashesV and having a plurality o1c openingstherein, a lock casing carried by the other sash, a locking memberadjustable in said casing and including' a pair of arms engageable inthe notches of the first named locking strip when the locking member isin its operative position, a bolt also forming a part of said lockingmember and having one end'engageable in any one of the openings in thesecond named locking strip when the locking member is in its lockingposition, and a permutation device associated with said bolt Vformaintaining the locking member in its operative position. I Y Y Y Y Intestimony whereof I affix my signature in the presence of two witnesses.A

. WILLIAM KUHEFUSS. Witnesses:

J oHN KUHEFUSS, ELIsn KUHEFUss.'

Copies of Vthis patent may be obtained for ve cents each,'by addressingthe "Commissioner of Patents,-

' Y Washington, D. C.

